Q Let S = (1, 2, 3, 9) For k = 1, 2, 5, let - Maths - Sets

Question

Q Let S = (1, 2, 3, 9) For k = 1, 2, 5, let N k be the number of
subsets of S, each containing five elements
out of which exactly k are odd Then N 1 + N 2 + N 3 + N 4 + N 5
A) 125
B) 252
C) 210
D) 126

Q â€‹Q Let S = x ∈ R : x ≥ 0   a
n d   2 x - 3 + x x - 6 + 6 = 0   Then S
A) contains exactly two elements
8) contains exactly four elements
C) is an empty set
D) contains exactly one element

Lovina Kansal · Accepted Answer

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